Feank m



(No Model.)

F. M. BROOKS.

GAS BURNER.

No. 595,762. Patented Dec. 21,1897.

8440c wto'o U ITED STATES PATENT FFICE;

FRANK M. BROOKS, OF BROO LYN, NEW YORK.

GAS-BURNER.

SPECIFICATION formingpart of Letters Patent No. 595,762, dated December 21 1897.

Application filed April 10, 1897.

To all whom it may concern:

Be it known that I, FRANK M. BROOKS, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification.

My invention relates to improvements in burners of the class now generally known as the WVelsbach or mantle burners, in which a small flame, ordinarily called the pilot-flame, burns permanently and acts as the igniting means for the gas when it is turned on full to effect the desired illumination, and this little pilot-flame burns just above the gauze partition or screen of the burner, the tube through which it is supplied stopping at or near the gauze. The pilot-flame should be so regulated that no smoke or deposit can come from it to soil the mantle and yet that it shall have sufficient volume, so that it will not be extinguished by air-drafts when the burner is not in use, and it has been found by experiment that if the pilot-flame be blue during the time that the Bunsen flame is illuminating the mantle then no smoking or other injury to the mantle arises. If, however, there be white flame at the pilot during the time the Bunsen flame is burning, then, owing, probably, to the fact that the gas in the pilot-tube has not thoroughly mixed with the oxygen of the air, there is not complete combustion and the Bunsen flame carries the uncomplish these results, I have invented a gas cock and plug of peculiar construction,whereby the supply of gas at the pilot-jet is automatically regulated as required.

Referring to the drawings, Figure 1 illustrates a vertical sectional view of those parts of a VVelsbach burner which are involved in Serial No. 631,517. (No model.)

this invention. Fig. 2 illustrates the plug thereto, somewhat enlarged.

A illustrates the body of the cook; 15, the plug thereof; 0, the Bunsen tube; D, the pilot-tube; E, the pilot-flame.

F is a washer for the plug.

G is the lever of the plug, to which pull chains or cords H are applied, as usual.

I is the main gas-supply passage'through the plug and through the body of the cock.

J is the supply-passage through the body of the cock which supplies the pilot jet or flame.

Referring now to Fig. 2, K is a groove formed circumferentially in the exterior of the plug, which connects at all times with the passage J above the plug and with the passage L below the plug, so that gas for the supply of the pilot-flameat all times passes through it. M is another groove or slot cut in the periphery of the plug, which when the main passage I, which supplies the gas to the Bunsenflame, is in operation does not engage with any source of gas-supply, but when the Bunsen flame is turned off, so that the main passage I does not connect with any source of gas supply, then the groove or slot M does engage with another gas supply passage N, which is similar to the one L on the opposite side of the body. The amount of gas supplied to the passages L and N is regulated by screw check-valves O and O.

The operation of the apparatus is as follows: When the plug of the cock is so turned as that gas is supplied to the main Bunsen burner, then gas is supplied to the pilot-tube only through the circumferential groove K in the plug. Consequently ablue flame only is present at the pilot-jet during the time the burner is illuminated. When, however, the cock is turned off, so that gas is no longer supplied to the Bunsen burner, then the groove or slot M is brought into engagement with the supply-passage N, and the gas which passes through it flows through the groove M and connects with the groove K, so that the flame at the pilot-jet is augmented.

It will be evident to those who are familiar with this art that modifications may be made in the details of construction shown as, for instance, the passages K and M may be differently located in the plug, all that is essential being that there must be two separate passages to supply the pilot-flame connected together, one of them in permanent connection with a gas-supply and the other only when the main flow of gas of the Bunsen flame is turned off. I therefore do not limit myself to such details.

Having described the invention, I claim 1. A gas-cock for a Velsbach burner, embodying a plug having a passage through it for supplying gas to a Bunsen burner, another passage in the plug which permanently supplies gas to a pilot-jet, and an auxiliary passage connecting with the last-named passage, which increases the supply of the pilotjet upon cutting off the supply to the Bunsen burner, for the purposes set forth.

2. A gas-cock for a \Velsbach orlike burner embodying two gas-passages below the plug for supplying'gas to the pilot-jet, and two channels or passages in the plug one of which at all times engages with one of said passages in the body, and the other engages with the othersnpply-passage only when the main sup ply of gas is turned off, for the purposes set forth.

3. A gas-cock for a Velsbach or like burner embodying a plug having a passage for the supply of gas to a Bunsen burner, and also passages for the permanent supply of gas to the pilot-jet made in its periphery,connected together at one end, and at the other separated, and passages in the body of the cock one of which is in permanent connection with one of the said passages in the plug and the other makes connection with the other upon turning off the main supply, for the purposes set forth. 7

4. A gas-cock for a \Velsbach or similar burner having a plug provided with a passageway for supplying gas to a Bunsen burner, and in its exterior surface, two passages for supplying, gas to the pilot-jet, one of them adapted to engage permanently with a source of gas-supply and the other to make such engagement during the time the main supply of gas is turned off, for the purposes set forth,

Signed at New York, in the county of New York and State of New York, this 5th day of April, A. D. 1897.

FRANK M. BROOKS. Vitnesses:

PHILLIPS ABBOTT, E. SIMPSON. 

